const querystring=require("querystring")
// var obj=querystring.parse('ie=utf-8&f=3&rsv_bp=1&rsv_idx=1&tn=93153557_hao_pg&wd=nodejs%E6%95%99%E7%A8%8Burl&oq=nodejs%25E6%2595%2599%25E7%25A8%258B&rsv_pq=e93904ed00015554&rsv_t=42b1mjCH9QsJJIh8%2BPlDlSbXWZ8pf06dScdxBDs3X8XzHFgbSlUzOkNykCV8KNaI4AEU9Q%2B6&rqlang=cn&rsv_enter=1&inputT=898&rsv_sug3=23&rsv_sug1=27&rsv_sug7=100&rsv_sug2=0&rsv_sug4=2656')
// console.log(obj)
// var str=querystring.stringify(obj)
// console.log(str)
// console.log(querystring.escape("name=慕白"));
// console.log(querystring.unescape("name%3D%E6%85%95%E7%99%BD"))